Nozzle for pressure-operated containers



June 12, 1945. H. BHLER ErAL NOZZLE FOR PRESSURE-OPERATED CONTAINERS Filed Sept. 10, 1943 2 Sheets-Sheet 1 V/,4 @Marimfd/www Sa Sb June l2, 1945.V H. BuHLER-ETAL NOZZLE FOR PRESSURE-OPERATED CONTAINERS Filed sept.v 1o, 1943 2 sheets-sheet 2 Pat'ented June 12, 1945 'PATENT oFFIcEf--fr "2,378,061 y NoZz'LfFoR'PRESSURE-opnamen e l fr CONTAINERS y Heinrich Bhler` and Ernst Miiller, .,Zurich, ySwitzerland i Application september 1o, 194.3,"seria1N0. 501,864 l f In Switzerland Februaryvl, 1943 sfoiaims (o1. 2224-494) My invention relates to rinfiprovements in `the discharge nozzlesof pressureoperated tubular pasteedispensin'g containers,v in particularV col'- lapsible tubes; and the objects of lmy improvement are, first, to provide a nozzle' structurally independent of the container and easilyand readily insertable therein, second, to aiforda` nozzle made of one piece and comprising all the r'spring elements necessary for itsoperation, and third, to eliminate the screw cap used heretofore. I'

I attain these and vrelated objects by the nozzle structure shown, by way of two formsof inveny tion, in the accompanying drawings, A`in'which- Fig. l is a lateral view of atubeequipped with a nozzle according to a first form of invention; Figs. 2 and 3 are top plan views of the latter showf ing two forms of discharge slotsfoi the latter; F'gs. 4` and 5 are sectional elevations of the mouth portions of Fig. 1, respectively in closed andopen position; Figs. 6 and '7, two elevations taken at right angles toeach other of the detached nozzle, respectively in closed and open position; Fig". 6a is a bottom plan, View ofthe nozzle; Figs."8l and 9 are sectional elevations of the mouth-portions of a 'second form of invention, respectively in the closed andy open position; Figs'. land'll,` bottom plan views of Figs. 8 and 9 respectively; Figs. 12-14 are two elevations taken at right anglesk to each other and a bottom plan view'ofth'e nozzle; and Figs. l and 16 illustratealsecuringswing hoop for bothforms of invention. v In the first formof invention (Figskl-UV the nozzle 2-8, which vis plugged from above 'into the tube throat I, comprises a basepo'rtionZ of sleeve form and of a' length roughly equal to that of'the tube throat, and ahead portion `3 having a beveled guide rriml or seatl. VThe head 3 is slotted at 5 for approximately half the height of the shank 2, and forms the nozzle mouth with the lips 5a and 5b. The bottom of the slot 5 is widened into the apertures 6. The nozzle base is recessed to form the helical spring 1, and slotted to form the prongs or spring dogs v8 which lock the nozzle under the base of the tube throat (Fig. 6a). The top rim of the tube throat is beveled to provide a seat for the nozzle rim 4,

When in assembling the nozzle is plugged into Ill two recesses Ill and the dogsA l2.

the tube throat I, its rim 4 contacts the top rim l through the tube throat from the bottom lofthe tube.` Applying now pressure uponthe tube or vits contents, the head 3 is .lifted fromyits seat II` against the action of the spring 'I`, and the'lps 5a and 5b part (Fig. 5) to open the discharge nozzle due to the spring action` ofthe slot 5'. When the said 4pressure is discontinuedgfthe' spring? withdraws the nozzle rinto .the tube throat and onto4 its seat 4 against the spring action of the slot 5, and the lips 5a and 5b are closed ,to seal thetube. f j jr In `,the second form of invention (Figs. 8-14) the nozzle is bayonet-fastened to the base of the tube" throat' I. To this end the'latter is provided with "the twoopposite snugs 9 formed by clipping the ,tube material at the points I I. Correspondingly, the nozzle base rim is'cupped to form the As shown in Figs.' 8 and 9, the beaded nozzle'base 'rim is securely lockedin'place by the s'nugs vil orethe tube throat e. I, and, furthermore, the beveledvs'eat 4 permits'of only an upward displacement ofthe nozzle in the latter. j The slots 5 are widened to form the triangle apertures I4 in the shank wall., By providing four apertures I4, which alternatingly are turned 180 degrees, 'instead of only two of elliptical shape in therst form of invention, the resiliency and the strength "of the shank wall are increased.` A*

The nozzle according tothe second form of in' vention is plugged fromV above into the tube `throat,and. adjusted therein to bring the recesses I0 into alignment with the tube-snugs `9" (Fig. '10)4". By' gripping the nozzle dogsy Illv with a kel7 tool Y' inserted throughthe open' tube end and turning them from underneath the -snug's' the nozzle is locked in'place (Fig. v11)l against the action-of the springs 'I' and 5,214. Upon applying pressure to the tubey or its contents, the spring I is'sl'lbject to an increased tension, the nozzle is lifted' from its seatA `4, the 'lips rpart under'the action ofthe vspring embodied by theapertures III and the slot 5, andthe contents issue from the latter. When the said pressure is discontinued, the spring 'I pulls the nozzle back onto its seat against the action of the spring 5,I4, and the slot 5 is closed (Fig. 8)

The two grooves II on the outside of the tube throat may serve as `bearing cups for a swing hoop I3 (Figs. 15 and 16), by means of which the slot 5 is locked'against involuntary opening when the tube is subject to a random pressure.

The invention described and illustrated aiords a self-acting and reliable closing device for tubular paste-dispensing containers, such as grease guns and collapsible tubes, and is extremely simtially spaced apertures, said head being provided with a normally-closed slot dening a dispensing outlet, and the ends of the said last-named slot terminating severally in said apertures, a beveled peripheral seat-forming rim on said head, and means on said shank member for anchoring the said nozzle and throat liner to said tubular throat, whereby pressure exerted from the interior of the container causes extension of' said resiliently extensible portion and opening of said dispensing outlet.

sure operated dispensing'container,l which com prises a tubular shank member having a head at one end thereof and'terminating at its other end in a helically-slotted and resiliently extensible portion, said shank member being provided intera 'mediate said head and said helically-slotted por.-

tion with a plurality of circumferentially spaced apertures, said head being provided with la normally-closed slot dening a dispensing outlet, -and the ends of the said last-named slot terminating A severally in said apertures, a beveled peripheral opening of said dispensing outlet.

2. A one-piece nozzle and throat liner fora pressure operated dispensing, container, which comprises a tubular shank member having a head at one end thereof and terminating at its other end in a helically-slotted andv resiliently extensible portion, said shank member being provided `intermediate said head and said helically-slotted portion Vwith a plurality of circumferentiall-y spaced apertures, said head being. provided with a normally-closed slot dening a dispensing outlet, and the ends. of the said last-named slot terminating severally in said apertures, a beveled peripheral seat-forming rim on` said head,v and means on said shank4 member for anchoring the said4 nozzle and throat liner, when inserted into a container tube throat, `to said throat, said anchoring means comprising dogs integralwith. said shank member and extending outwardly therefrom, whereby pressure exerted from. the interior of the container Icauses extension. of said resiliently extensible portion and opening of said4 dispensing outlet. l y l 3. A vpressure operated dispensing container having a tubular throat and a onegpece nozzle and throat liner in. said throat, said nozzle: and t liner comprising a tubular shank member having ahead at one end thereof and terminating atits other end in a helically-slotted and resiliently extensible portion said shank member being pro.- vided `intermediate said head and said helicallyslotted portion withga plurality of circumferen- 4. A pressure operated dispensing container having a tubular throat and a one-piece nozzle and throat liner in said throat, said nozzle and l liner comprising a tubular shank member having a head at one end thereof and terminating at its other end in a, helically-slotted and resiliently extensible portion, said shank member being provided intermediate said head and said helicallyslotte'd portion with a plurality of circumferentially spaced apertures, said head being provided with a normally-closed slot dening a dispensing outlet, and the endsof the said last-named slot terminating severally in. said apertures, a beveled peripheral seat-forming rim on said head, and meanson said shank member for anchoring the said nozzle and throat liner to said tubular throat, said anchoring means comprising dogs integral with said shank member and extending outwardly therefrom, whereby pressure exerted from the interior of the container causes extension of said resiliently extensible portion and4 opening of said dispensing outlet.

5. A pressure operated dispensing container having a tubular throat and a one-piece nozzle and throat liner in said throat, said nozzle and liner comprising a tubular shank member having a head at one end thereof and terminating at its other end inv a helically-slotted and resiliently extensible portion, said shank member being provided intermediate said head and said helicallyslotted portion with a plurality of circumferentially spaced apertures, said head being provided with a normally-closed slot deiining a dispensing outlet, and the ends of the said last-named slot terminating severally in said apertures, a

beveled peripheral seat-forming rimon said head, and means for operatively associating said nozzle and throat liner with said throat, said lastnamed means comprising apair of spaced lugs projecting inwardly from said throat and a discontinuous peripheral ange extending outwardly from said helically slotted portion and engageable under said lugs, whereby pressure exerted from the interior of the container causes extension of said resiliently extensible portion and opening of said dispensing outlet.

HEINRICH BHLER.

ERNST MLLER. 

